DOLABRIFERA. 123 
Shell calcareous, white, a little arcuate, wider and flat in front, 
contracted and callous at the posterior part. 
Oahu, Sandwich Is. (Voy. Bonite). 
Aplysia oahouensis Souu., Voy. autour du Monde * * la Bonite, 
Zool., ii, p. 461, pl. 25, f. 10-13 (1852). 
The description of this form has been overlooked by subsequent 
writers. Perhaps one or other of Pease’s species will prove to be 
synonymous with it. 
D. oLIvAckA Pease. PI. 34, fig. 25. 
Elongate pyriform shape, rounded posteriorly, rugose, and orna- 
mented with small filaments. Back convexly rounded. Mantle 
lobes small, rounded and closely enveloping the body, the right over- 
lapping the left, leaving two small orifices; a groove extends from 
the mantle lobes along the back and right side of the head to the 
mouth. Dorsal tentacles grooved laterally and slightly dilating 
outwards, oral tentacles longer than the dorsal, and curved forwards, 
grooved and much dilated. Eyes small, black, distinct, sessile in 
front, laterally to dorsal tentacles. Mouth witha bilobed veil. Foot 
smooth, shape same as body. Color varies; usually of a dark olive- 
green, with sap green margins, and varied with whitish and dusky. 
Filaments pale. Foot pale greenish-slate, dotted with dusky brown 
and white. (Pease). 
Shell narrow, straight, oblong, radiately depressed in the middle. 
Margins straight, square; beak produced, trigonal; apex callous, 
bilobed. (Sowbd.) 
Sandwich Is. (Pse.) 
D. olivacea Psr., P. Z. S., 1860, p. 22.—Sows., Conch. Icon., xvi, 
pl. 1, f. 7.— Aplysia (Dolabrifera) olivacea MARTENS & LANGKAVEL, 
Donum Bismarckianum, p. 54. 
The eggs are deposited under stones, coiled from right to left. 
D. MARMOREA Pease. PI. 34, figs. 21, 22. 
Soft parts unknown. Shell short, subquadrate, thickened, straight ; 
beak rather short, wide, thick, with incurved, callous apex; basal 
margin straight; upper margin excavated; external and terminal 
margins a little contracted. (Sowb.) 
Sandwich Is. 
D. marmorea (Pease) Sows., C. Icon., xvi, f. 5. 
